5-1
Chapter 5 Troubleshooting and Fault Diagnostics
5.1 General
5.1.1 Fault detection function
Table 1 Fault information and possible solutions
LED display
Description
Cause
Possible solutions
Over Current
The inverter output
current exceeds the
overcurrent level (200% of
the inverter rated current).
Acceleration / Deceleration time
is too short.
Contactor at the inverter output
side.
A special motor or applicable
capacity is greater than the
inverter rated value.
Short circuit or ground fault.
Extend acceleration /
deceleration time.
Check the motor wiring.
Disconnect motor and try
running inverter.
Over Current
The inverter output
current exceeds the
overcurrent level in
acceleration time
Acceleration time is too short
Capacity of motor is bigger than
inverter
Short circuit between winding
and shell of motor
Short circuit between wire and
ground of motor
IGBT broken module
Set the longer acceleration
time
Change to bigger capacity
of inverter
Examine motor
Check the wire
Replace IGBT module
Over Current
The inverter output
current exceeds the
overcurrent level in
acceleration time
Acceleration time is too short
Capacity of motor is bigger than
inverter
Short circuit between winding
and shell of motor
Short circuit between wire and
ground of motor
IGBT broken module
Set the longer acceleration
time
Change to bigger capacity
of inverter
Examine motor
Check the wire
Replace IGBT module
Over Current
The inverter output
current exceeds the
overcurrent level in
deceleration time
Deceleration time is too short
Set the longer acceleration
time
Ground Fault
The current to ground
exceeds 50% of the
inverter rated output
current (08-23 = 1, GF
function is enabled).
Motor damaged (insulation).
Wire damage or deterioration.
Inverter DCCT sensors defect.
Replace motor.
Check the motor wiring.
Disconnect motor and try
running inverter.
Check resistance between
cables and ground.
Reduce carrier frequency.
Summary of Contents for E510-201-SH
Page 1: ......
Page 28: ...3 14 b 200V 2HP 1 3PH 200V 3HP 20HP 400V 3HP 25HP IP20 NEMA1 ...
Page 29: ...3 15 c 200V 25HP 400V 30HP d 200V 30HP 40HP 400V 40HP 75HP ...
Page 51: ...3 37 3 5 Standard Wiring 10V AI1 AI2 AGND E P P ...
Page 72: ...4 6 4 1 4 Example of keypad operation Example 1 Modifying parameters ...
Page 74: ...4 8 4 1 5 Operation control ...
Page 206: ...4 140 Acceleration Deceleration calculation of mode 2 ...
Page 316: ...4 250 6 Timer mode 6 FLASH Timer mode 2 7 Timer mode 7 FLASH Timer mode 3 ...
Page 424: ...REVISIONS Date Manual Number Revision May 2017 4KA72X645T01 First edition ...
Page 425: ......